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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Short-tailed river stingray ： ウィキペディア英語版 Short-tailed river stingray The short-tailed river stingray (''Potamotrygon brachyura'') is a species of river stingray (Potamotrygonidae) native to South America; they are known to inhabit Paraguay, Uruguay, and Argentina river basins. Growing to a size of 4.9 ft (1.5 m) and a weight of 459 lb (208 kg), they are hunted as food and for aquaria.〔http://www.iucnredlist.org/apps/redlist/details/161687/0〕〔 ==Description== Short-tailed river stingrays are circular in shape and humped in the back.〔River Monsters, First Edition, Da Capo Press, 2011, p. 165〕 The biggest recorded specimen weighed 661 lb (300 kg),〔〔(Fishing World Records )〕 which makes them the largest of the Potamotrygon species.〔http://animal.discovery.com/fish/river-monsters/short-tailed-river-stingray.html〕 They have a dark pattern on their backs, probably used as camouflage.〔 The ray's tail is very muscular and thick, covered with short spines at the base and a venomous sting at the end.〔River Monsters, First Edition, Da Capo Press, 2011, p. 162〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Short-tailed river stingray」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.